\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{circuitikz}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing, decorations.pathreplacing, decorations.shapes,}
\begin{document}
\small
\begin{circuitikz}[>=latex, scale=1.0,european]
  % \useasboundingbox(0.9,0)rectangle(5.1,5);
% \draw (0,3) to [C]  (0,1);
% \draw (1.5,3) [eC] to (1.5,1);
\draw (3,1) [C] to (3,3);
\draw [->, thick](2.5,1.5)--(3.5,2.5);
% \draw (4.5,1) [C] to (4.5,3);
% \draw [-|, thick](4,1.5)--(5,2.5);
% \node at (0,0.5){甲};
% \node at (1.5,0.5){乙};
% \node at (3,0.5){丙};
% \node at (4.5,0.5){丁};
\end{circuitikz}
\end{document}